Fan attachment.



N0. 666.l9|. Patented Ian. l5, I901. F. M. GALBRAITH.

FAN ATTACHMENT.-

(Application filed Oct. 22, 1900.)

(No Model.)

Unrrnn STATES PATENT Genres.

FRANK M. GALBRAITH, OF ATLANTA, GEORGIA.

FAN ATTACHIVI ENT.

SEEOIEIGATIQN forming part of Letters Patent N 0. 666,191, dated January15, 1901.

Application filed October 22, 1900. Serial No. 33,947. (No modem T aZZwhom it may concern:

Be it known that I, FRANK M. GALBRAITH, of Atlanta, in the county ofFulton, State of Georgia, have invented certain new and usefulImprovements in Fan Attachments, of which the following is a completespecification, reference being had to the accompanyingdrawings.

The object of my invention is to produce an improved fan attachmentwhich may be readily applied to and disengaged from a rotary member orwheel, through rotation of which the fan may be utilized to set inmotion a current of air.

It is especially designed as an attachment for sewing-m achines, to thebalance-wheel of which it is designed to be applied.

As an attachment for the purpose specified, the invention comprehends asimple, cheap, light, and convenient article which can be readilymanipulated, which takes up little space, and which embodies means forreversing the position of the vanes of the fan by which the current ofair generated by the fan may be driven in either of two directions, as

' required by the direction of rotation of the member to which it isattached. It also comprehends means for folding the fan into smallcompass in storing or shipping the articles.

In the accompanying drawings, Figure I is a side elevation of one formof embodiment of my invention attached to the balance-wheel of asewing-machine, showing the fan folded in dotted lines. Fig. II is afrontelevation of the subjectmatter of Fig. 1, part of the rim of thewheel being broken away to show the means of attaching the fan to thewheel. Fig. III is a detail view of one of the vanes, illustrating infull lines one position thereof and in dotted lines the vane reversed'Referring to the numerals on the drawings, 1 and 2 indicate strips madeof any suitable resilient metal, which, medially pivoted together, asindicated at 3, constitute the frame of my device. The opposite ends ofeach of the strips 1 and 2 are disposed at an angle, preferably a rightangle, to the body of the strip. These ends (indicated severally by thereference-numeral 5) constitute the engaging members of the frame andare preferably formed with the strips, as by bends 6. They havecollectively a yielding expansive tendency, afforded by the resiliencyof the metal of which the strips 1 and 2 are made, and are provided withengaging terminals 7, which are adapted, as by being curved in shape, toengage the inner wall of the wheel-rim S, and thereby secure the frameto the wheel, which in the drawings is illustrated as the balance-wheelof a sewing-machine.

Each of the engaging members 5 is provided near its bend 6 with a vane10, that is preferably of the shape illustrated-that is to say, theseveral vanes are of uniform dish shape a shape which may be imparted tothe disks of metal of which they are made, as by stamping or pressing.The shape illustrated is preferred not only as constituting an efficientand economical form of vane, but as afford in g means for readilyreversi n g the respective positions of the vanes and also for nestingthem one into the other, as illustrated in dotted lines in Fig. I, whenthe strips 1 and 2 of the frame are folded together upon their pivot 3,as for shipment.

Each of the vanes 10 is preferably provided with an ear 12, whichconstitutes a slight departure in the vane from a true circular shapeand which is adapted to accommodate three apertures, by means of whichthe vane is secured to its respective engaging member 5 of the frame.One of said apertures, 14., is shown in full lines in Fig. III, andanother, 15, is shown in dotted lines in said figure. The apertures 14and 15 are lateral apertures, by means of which the reversal of thevanes is accomplished, while the medial aperture, affording a constantpivotal support upon the engaging member to which the vane is socured,is shown in each figure as occupied by a pivot-pin or rivet 16. When thevane is set in the position shown in full-lines in Fig. III and securedin that position, as by a screw 17, the said screw is passed through thelateral aperture 15 in the vane and screws into a screw-threadedaperture provided for it in the engaging member 5. Instead of the screwany other detachable means for fixing the position of the vane may beemployed. If it is desired that the device shall generate a current ofair in the opposite direction to that in which it drives when set in theposition shown in Fig. III, all that is necessary to accomplish thatresult is to shift the position of the vane to that shown in dottedlines insaid tion for securing the vanes of the fan in figure; This maybe accomplished by removing the screw 17, turning the vane upon itspivot-pin 16, inserting the screw 17 into the aperture 14, and screwingthe screw 17 into the aperture provided for it in the member 5.

What I claim is In a rotary fan the combination with a frame anddish-shaped vanes provided with ears, of a pivotal connection betweenthe ears of each" vane and the frame, and means upon opposite sides ofsaid pivotal conneceither of two positions, whereby adjustment isobtained through which the fan may be operatively applied to a Wheelrotative in higher direction.

In testimony of all which I have hereunto subscribed my name.

FRANK M. GALBRAITH.

Witnesses:

W. M. MIDDLEBROOKS, J12, O. A. MIDDLEBROOKS.

It is hereby eertifiedthat in Letters Patent No. 666,191, grantedJanuary 15, 1901, upon the application of Frank M. Galbraith, ofAtlanta, Georgia, for an improvement 2, the word higher should readeither; and that ith this correction therein that the same may filee.

aled this 5th day of February, A. 1)., 1901.

F. L. CAMPBELL, Assistant Secretary of the Interior.

reetion, as follows: Inline 17, page the said Letters Patent should beread w conform to the record of the ease in the Patent 0 Signed,conntersigned, and se [SEAL] a P w T e n 3w m m .v I n d D m m .C WDH aO LU m m C :2 230

